General Parasitology and Protozoa
Sexual method of reproduction is by conjugation in:
a. Ciliated protozoan parasites show conjugation.
b. Balantidium coli is a ciliate protozoan. It is the only ciliate protozoan which causes human disease. It is the largest protozoan parasite infecting man.
c. Habitat: large intestine, caecum, terminal ileum
d. Reservoir: pig
e. Trophozoite: 80-120m, peristome, cytostome, cytopharynx, cytopyge, two nuclei (macronucleus, micronucleus)
f. Cyst: spherical, ellipsoid, 50-75m, double layered cyst wall, Infective stage.
g. Transmission: pig to pig, pig to man, man to man, man to pig